Rotary fluid-engine.



ROTARY'FLUID ENGINE.

APPLICATION FILED JUNE 16, 1902.

N0 MODEL.

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m 4 OZ 26m M UNITED STATES Patented December 29, 1903.

PATENT OFFICE.

JOHN FRANCIS COOLEY, OF BOSTON, MASSACHUSETTS, ASSIGNOR, BY DIRECT AND MESNE ASSIGNMENTS, TO COOLEY EPICYCLOIDAL ENGINE DEVEL- OPMENT COMPANY, OF JERSEY CITY, NEWJERSEY, AND BOSTON, MAS- SAOHUSETTS, A CORPORATION OF NEW JERSEY, AND COOLEY EPIOY- CLOIDAL ENGINE COMPANY, A CORPORATION OF NEW JERSEY.

ROTARY FLUID-ENGINE.

SPECIFICATION forming part of Letters Patent No. 748,348, dated December 29, 1903.

' Application filed June 16, 1902. Serial No. 111,810. (No model.)

To all whom it may concern:

Be it known that 1, JOHN FRANCIS CooLEY,

otBoston, (Allston,) in the county of Sufiolkr" cylinder with diametric internal projections which rest upon the periphery of the spacer, the said cylinder acting as a valve-piece in relation to said ports whereby the ports are brought successivelyinto com mu nication,and

2o exhaust-chests for propelling or being propelled by fluids--in other words, rotary fluidengines which may be operated by internal devices to produce pressure in the fluid medium and, conversely, which operate in con z5 sequence of pressure in a fluid medium to give motion to external devices.

My invention consists of certain novel features hereinafter described, and particularly pointed out in the claims.

3o Inthe accompanying drawings, which illustrate aconstruction embodying my invention, Figure 1 is a central longitudinal sectional view through the engine on the line 1 1, Fig. 2. Fig. 2 is a cross-sectional view through the engine on the line 2 2, Fig. 1, looking in the direction indicated by the arrow.

Like letters of reference refer to like parts throughout both views.

Referring to Fig. 2, steam or other fluid is admitted through the opening A into the pressure-chest B within the cylinder A and passes through the port 0 in the spacer L into the space D, pressing upon the piston E between the shoes F and G, the resultant of 5 which pressure passes below the axis of revolution P of the piston E, thereby causing its rotation in the'direction of the arrow. In other words, the distance on the radial line between the center or axis P to the shoe F is less than the distance between the axis P and 5c the shoe G, making a preponderance of pressure below the axis P and causing its revolution in the direction of the arrow, as above stated, which continues until the shoe F and the shoe Goccupy positions corresponding to the present position, Fig. 2, of the ports C and H, when the radial distances of the shoes F and G from the center of revolution P of the piston E are equal and the port C is in position over the valve-piece packing-strip I and the chamber D is about to exhaust into the chest J, from which the steam exhausts. through the opening K, the spacer L having rotated in the same direction as the piston E, but at a slower speed, and whose relation in integral numbers may be expressed as two to three in complete revolutions of both parts. The shoe M, occupying a point corresponding to the valve-piece packing-strip N, would thus be in a position which, measured upon a radius drawn from the center of revolution P of the piston E, would be shorter than the distance from the center of revolution P of the piston E to the shoe F in its moved posi tion, which would correspond to the present position of the port O, (shown in Fig. 2,) making the preponderance of pressure to the right of the center of revolution P of the piston E and causing rotation in the direction of the arrow, theport 0 then communi- 8o eating with the pressure-chest B and allowing the fluidto enter from the chest B to the space R, and the operation continues as above described. The pinions P mounted on the shaft P of the piston E, and the internal gears L, out in openings in the disks L secured to the spacer L, intermesh and operate at the same correlative speed ratio as thepiston and spacer of the engine. The rings S and T, (shown in dotted and section 0 lines, Fig. 1,) and of which one, T, is shown in dotted lines, Fig. 2, are provided to pre vent internal leakage to or from the chests. The wearing-rings L are provided with radial projections (shown in dotted lines, Fig. 2) and are located in the two opposite end disks L as shown in section in Fig. 1. On the outer ends of the engine are located the cylinderheads U, through which project the shaft P of the piston E, and which cylinder-heads have also inwardly-projecting hubs U, which form a bearing for the hubs L on the end disks L of the spacer L and also for the shaft P. The spring-pressed va1ve-piece packingstrips N and I are located Within the two diametric internal partitions N and j, as shown, and said strips and partitions rest upon the periphcry of the spacer L which is in continuous contact with the periphery of the piston E at points situated at radially-equal distances from the axis of their rotation Q, which is the center of rotation of the spacer L. The shoes F, G,an'd M rock, respectively, in springpressed splines f, g, and on within recesses in the spacer equidistant from each other. The entrance and exit ports 0, H, and O for fluid are laterally situated in the periphery of the spacer L and preferably intermediate between the points of contact of the spacer upon the piston.

Having thus described the nature of my invention and set forth a construction embodying the same, what I claim as new, and desire to secure by Letters Patent of the United States, is

1. In a rotary fluid-engine, a cylinder having diametrically-situated interprojecting radial partitions, a rotating spacer between the extremities of said partitions and in continuous contact therewith rotating upon a positionally-fixed axis, a like directionally-rotating piston within said spacer and rotating upon a positionallyfixed axis parallel to the axis of the spacer, the spacer in continuous contact with the periphery of said piston at points situated at radially-equal distances from the axisof rotation of the spacer, and equiangularly-spaced intervals along their circular path of travel, and entrance and exit ports for fluids laterally situated in the periphery of said spacer and between the points of contact with said piston.

2. In a rotary fluid-engine, a cylinder having diametrically-situated interprojecting radial partitions, a rotating spacer between the extremities of said partitions and in continu ous contact therewith rotating upon a positionally-flxed axis, a like directionally-rotating piston within said spacer and rotating upon a positionally-fixed axis parallel to the axis of the spacer, the spacer in continuous contact with the periphery of said piston at points situated at radially-equal distances from the axis of rotation of the spacer and equiangularly-spaced intervals along their circular path of travel, and entrance and exit ports for fluids situated in the periphery of said spacer and between the points of contact with said piston.

3. In a rotary fluid-engine, a cylinder havingdiametrically-situated interprojecting radial partitions, a rotating spacer between the extremities of said partitions and in continuous contact therewith rotating upon a positionally-fixed axis, a like directionally-rotating piston within said spacer and rotating upon a positionally-fixed axis parallel to the axis of the spacer, the spacer in continuous contact with the periphery of said piston at points situated at radially-equal distances from the axis of rotation of the spacer and equiangularly-spaced intervals along their circular path of travel both piston and spacer rotating in the same direction at relatively constant but different rates of speed, and entrance and exit ports for fluids laterally situated in the periphery of said spacer and between the points of contact with said piston.

4. In a rotary fluid-engine, a cylinder having diametrically-situated interprojecting radial partitions, a rotating spacer between the extremities of said partitions and in continuous contact therewith rotating upon a positionally-fixed axis, a like directionally-rotat- 7 ing piston within said spacer and rotating upon a positionally-fixed axis parallel to the axis of the spacer, the spacer in continuous contact with the periphery of said piston at points situated at radially-equal distances from the axis of rotation of the spacer and equiangularly-spaced intervals along their circular path of travelboth piston and spacer rotating in the same direction at relatively constant but dift'erentrates of speed, and entrance and exit ports for fluids situated in the periphery of said spacer and between the points of contact with said piston.

5. In a rotary fluid-engine, a cylinder having diametrically-situated interprojecting radial partitions, a rotating spacer between the extremities of said partitions and in continuous contact therewith and rotating upon a positionally-fixed axis, a rotating piston in said cylinder whose axis is parallel to the axis of said cylinder and mounted upon a shaft eccentric to said cylinder, cylinder-heads provided with eccentric bearings for said pistonshaft, and entrance and exit ports for fluids laterally situated in [the periphery of said spacer and between the points of contact with said piston.

6. In a rotary fluid-engine, a cylinder having diametrically-situated interprojecting radial partitions, a rotating spacer between the extremities of said partitions and in continuous contact therewith and rotating upon a positionally-fixed axis, a rotating piston in said cylinder whose axis is parallel to the axis of said cylinder and mounted upon a shaft eccentric to said cylinder, cylinder-heads provided with eccentric bearings for said piston-shaft, and entrance and exit ports for fluids situated in the periphery of said spacer and between the points of contact with said piston.

7. In a rotary fluid-engine, a cylinder having diametrically-situated interprojecting radial partitions, a rotating spacer between the extremities of said partitions and in continuous contact therewith rotating upon a positionally-fixed axis, a like directionally-rotating piston within said spacer and rotating upon a positionally-fixed axis parallel to the IZC axis of the spacer and provided on its shaft with gear adapted to interm esh with gearin the spacer and cause the like directional rotation of the spacer with the piston, the spacer in continuous contact with the periphery of said piston at points situated at radially-equal distances from the axis of rotation of the spacer and equiangularly spaced intervals along their circular path of travel, and entrance and exit ports for fluids laterally situated in the periphery of said spacer and between the points of contact with said piston.

8. In a rotary fluid-engine, in combination, a rotary piston having its periphery provided with circular portions of the same radius but of difiereut centers, a rotary spacer having a cylindrical outer surface, and provided on its inner circumference with three recesses of substantially the same radius as the circular portions of the piston, partitions between ad jacent recesses and engaging the peripheral surface of the rotary piston, ports in said spacer communicating with said recesses, said piston and spacer rotating in the same direction at relatively constant but different rates of speed, an outer casing within which said spacer rotates,a fluid-inlet chamber within saidcasing and of sufficient length to enable two of the ports in the spacer to simultaneously communicate with it, a fluid-outlet for said casing, and means in said casing engaging the outer circumference of the spacer intermediate said fluid-inlet chamberand said fluid-outlet to cu t off com m unication between said fluid-inlet chamber and the fluid-outlet, substantially as described.

9. In a rotary fluid-engine, in combination, a rotary piston, a rotary spacer having fixed partitions bearing on the peripheral curved surfaces of the piston, both piston and spacer mounted on different axes of rotation and rotating in the same direction at relatively constant but difierent rates of speed, an outer casing within which said spacer rotates, said casing having a fluid-inlet chamber of sufficient length to simultaneously communicate with a plurality of chambers between said spacer and piston, and having a fluid-outlet with which a third chamber between said spacer and piston is adapted tocommunicate, and means in the said outer casing to cut off communication between said fluid-inlet chamber and said fluid'outlet chamber, substantially as described.

10. In arotaryfluid-engine,in combination, a rotary piston, a rotary spacer having fixed partitions bearing on the peripheral curved surfaces of the piston,and provided with ports extended through said spacer, both piston and'spacer being mounted on difierent axes of rotation and rotating in the same direction at relatively constant but diiferent rates of speed, an outer casing provided with a fluidinlet adapted to communicate with each space or chamber formed between said rotary piston and said spacer from substantially its minimum to substantially its maximum area, a

fluid-outlet for said casing, means in the said casing for closing the inlet-port. for a space or chamber between said piston and spacer when said space has reached substantially its maximum area, and means in the said casing for cutting oif the fluid-outlet port from the fluid inlet chamber, substantially as described.

11. In a rotary fluid-engine, in combination, a rotary piston, a rotary spacer having fixed partitions bearing on the peripheral curved surfaces of the piston and provided with ports extended through said spacer, both piston and spacer being mounted on different axes of rotation and rotating in the same direction at relatively constant but different rates of speed, an outer casing provided with a fluidinlet adapted to communicate with the spaces or chambers formed between said rotary piston and said spacer until said spaces or chambers have reached substantially their maximum area, and means in said casing for closiag the inlet-ports of said spaces or chambers when they have reached substantially their maximum areas, substantially as described.

In testimony whereof I have signed my name to this specification, in the presence of two subscribing witnesses, this 24th day of May, A. D. 1902.

JOHN FRANCIS OOOLEY. Witnesses:

A. L. NUSSER, E. L. HARLOW. 

